[MicroBob]

I can see how that can happen.
But I still think that's a personality flaw as much as anything else.
Some doctors are susceptible to such ego problems and others aren't.

My GF generally dislikes most doctors because so many give off the attitude of being borderline God. But some doctors are generally respectful of nurses and other people and do not give off such an attitude.

Some people are nuts...other people aren't. And it doesn't necessarily take med-school to make them one way or the other.

IFX's gal might not be quite so high-and-mighty if she did something other than medicine. But I suspect she would still look down on him somewhat similarly and they would still have problems.
Her relationship with her hyper-Mom and their argument about the oil-change and the fact that she seems to practically directly take after her REALLY says a lot imo.

Insisting that she change his oil for him and not even allowing him to do it how he directly stated he preferred probably has less to do with anything that med-school has done to her.
That type of stuff in her personality might be partly responsible for her going into med-school in the first place however.